Operation Manual

Page 54 FT-450 OPERATION MANUAL
TONE SQUELCH OPERATION
You may also use “Tone Squelch” whereby your receiver will be kept silent until an incoming signal bearing a
matching CTCSS tone is received. Your receiver’s squelch will then open in response to the reception of the
required tone.
1. Press and hold the
[
F
]
button for one second to
enter the Menu mode. The “ ” icon will ap-
pear on the display.
2. Rotate the
[
DSP/SEL
]
knob to select the menu
item “EXT MNU”.
3. Press the
[
DSP/SEL
]
knob to enable adjustment of
this menu item. The “ ” icon will be blinking.
4. Rotate the
[
DSP/SEL
]
knob to select “ON” to ex-
pand the menu items.
5. Press the
[
DSP/SEL
]
knob. The “ ” icon re-
turns to appear continuously.
6. Rotate the
[
DSP/SEL
]
knob to select menu item
“SQL TYP”.
7. Press the
[
DSP/SEL
]
knob to enable adjustment of
this menu item. The “ ” icon will be blinking.
8. Rotate the
[
DSP/SEL
]
knob to select the “ENC
DEC”.
9. Press the
[
DSP/SEL
]
knob. The “ ” icon re-
turns to appear continuously.
10. Rotate the
[
DSP/SEL
]
knob to select menu item
“TONE F”, then press the
[
DSP/SEL
]
knob to en-
able adjustment of this menu item.
11. Rotate the
[
DSP/SEL
]
knob to select the desired
CTCSS tone to be used. A total of 50 standard
CTCSS tones are provided.
12. Press the
[
DSP/SEL
]
knob. The “ ” icon re-
turns to appear continuously.
13. Press and hold the
[
F
]
button for one second to save
the new setting and return to normal operation.
When Tone Squelch is activated, the “ ” icon
appears in the display.
FM MODE OPERATION
[
F
]
button
[
DSP/SEL
]
knob
CTCSS TONE FREQUENCY
(
Hz
)
67.0 69.3 71.9 74.4 77.0 79.7 82.5 85.4
88.5 91.5 94.8 97.4 100.0 103.5 107.2 110.9
114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2
151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8
177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5
203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8
250.3 251.4